If you plan on running the S5 class at the SKUSA Spring, Summer and SuperNationals, go to ekarting news and reply to the SKUSA post within the Shifter Forum. If 10 commitments (registrations) are not received by April 1st, the S5 class will be dropped from the Pro Tour, including the SuperNats. You can acknowledge your plans to attend these events via the ekartingnews forum or by sending an email to SKUSA (Ken Schilling at kschilling at superkartsusa.com.